Cometic 4.200 MLS Head Gasket - .040 - SB Chevy NG500 3200 rpm governor spring extends

3200 rpm governor spring extends engine rev range by 700 rpm

Just as importantly

Kit weighs less than 50 grams

Over 320" of pointer movement adds dial scale and resolution

Cometic 4.200 MLS Head Gasket - .040 - SB Chevy NG500 3200 rpm governor spring extendsProduct Description: Cylinder Head Gasket 4. 200 in Bore 0. 040 in Compression Thickness Multi Layer Steel Small Block Chevy Sold Individually Since 1989, Cometic Gasket has grown into a leading worldwide supplier of custom and short run gaskets for the motorsports industry. Cometic Gasket supplies hi performance gaskets for a variety of motorsports markets. Today, Cometic produces and ships more than 5,000 types of gaskets. Since its inception,